288 	struct ttm_ref_object *ref;  in ttm_ref_object_exists()  local
299 	ref = drm_hash_entry(hash, struct ttm_ref_object, hash);  in ttm_ref_object_exists()
300 	if (unlikely(base != ref->obj))  in ttm_ref_object_exists()
307 	if (unlikely(atomic_read(&ref->kref.refcount) == 0))  in ttm_ref_object_exists()
324 	struct ttm_ref_object *ref;  in ttm_ref_object_add()  local
340 			ref = drm_hash_entry(hash, struct ttm_ref_object, hash);  in ttm_ref_object_add()
341 			if (kref_get_unless_zero(&ref->kref)) {  in ttm_ref_object_add()
348 		ret = ttm_mem_global_alloc(mem_glob, sizeof(*ref),  in ttm_ref_object_add()
352 		ref = kmalloc(sizeof(*ref), GFP_KERNEL);  in ttm_ref_object_add()
353 		if (unlikely(ref == NULL)) {  in ttm_ref_object_add()
354 			ttm_mem_global_free(mem_glob, sizeof(*ref));  in ttm_ref_object_add()
358 		ref->hash.key = base->hash.key;  in ttm_ref_object_add()
359 		ref->obj = base;  in ttm_ref_object_add()
360 		ref->tfile = tfile;  in ttm_ref_object_add()
361 		ref->ref_type = ref_type;  in ttm_ref_object_add()
362 		kref_init(&ref->kref);  in ttm_ref_object_add()
365 		ret = drm_ht_insert_item_rcu(ht, &ref->hash);  in ttm_ref_object_add()
368 			list_add_tail(&ref->head, &tfile->ref_list);  in ttm_ref_object_add()
379 		ttm_mem_global_free(mem_glob, sizeof(*ref));  in ttm_ref_object_add()
380 		kfree(ref);  in ttm_ref_object_add()
389 	struct ttm_ref_object *ref =  in ttm_ref_object_release()  local
391 	struct ttm_base_object *base = ref->obj;  in ttm_ref_object_release()
392 	struct ttm_object_file *tfile = ref->tfile;  in ttm_ref_object_release()
396 	ht = &tfile->ref_hash[ref->ref_type];  in ttm_ref_object_release()
397 	(void)drm_ht_remove_item_rcu(ht, &ref->hash);  in ttm_ref_object_release()
398 	list_del(&ref->head);  in ttm_ref_object_release()
401 	if (ref->ref_type != TTM_REF_USAGE && base->ref_obj_release)  in ttm_ref_object_release()
402 		base->ref_obj_release(base, ref->ref_type);  in ttm_ref_object_release()
404 	ttm_base_object_unref(&ref->obj);  in ttm_ref_object_release()
405 	ttm_mem_global_free(mem_glob, sizeof(*ref));  in ttm_ref_object_release()
406 	kfree_rcu(ref, rcu_head);  in ttm_ref_object_release()
414 	struct ttm_ref_object *ref;  in ttm_ref_object_base_unref()  local
424 	ref = drm_hash_entry(hash, struct ttm_ref_object, hash);  in ttm_ref_object_base_unref()
425 	kref_put(&ref->kref, ttm_ref_object_release);  in ttm_ref_object_base_unref()
433 	struct ttm_ref_object *ref;  in ttm_object_file_release()  local
448 		ref = list_entry(list, struct ttm_ref_object, head);  in ttm_object_file_release()
449 		ttm_ref_object_release(&ref->kref);  in ttm_object_file_release()